Plant Coordination

What is gravitropism?

• Gravitropism is the growth response of a plant in relation to gravity.

• Gravitropism is the ability of plants to change color in response to light

• Gravitropism is the process of photosynthesis in plants

• Gravitropism is the movement of animals in response to gravity

Explain how phototropism works in plants.

• Phototropism in plants is controlled by the hormone auxin, which moves to the shaded side of the plant, causing cells to elongate and bend towards the light source.

• Phototropism is caused by the plant seeking water instead of light

• Phototropism is controlled by the hormone gibberellin

• Phototropism is a result of the plant's desire to avoid sunlight

Define tropisms and provide examples.

• Thermotropism (response to temperature)

• Chemotropism (response to chemicals)

• Hydrotropism (response to water)

• Tropisms are directional growth responses in plants in response to external stimuli. Examples include phototropism (response to light), gravitropism (response to gravity), and thigmotropism (response to touch).

How does auxin play a role in plant coordination?

• Auxin causes plant wilting and decay.

• Auxin has no impact on plant coordination.

• Auxin regulates growth processes in plants.

• Auxin is only involved in photosynthesis in plants.

What is the main difference between positive and negative gravitropism?

• Type of soil

• Speed of growth

• Color of leaves

• Direction of growth in response to gravity

Discuss the significance of phototropism in plant growth.

• Phototropism causes plants to grow towards water sources instead of light sources.

• Phototropism has no impact on plant growth.

• Phototropism helps plants orient themselves towards light sources to optimize photosynthesis.

• Phototropism is responsible for regulating the plant's internal temperature.

How do plants exhibit tropic movements?

• Plants exhibit tropic movements through responding to sound, temperature, and humidity.

• Plants exhibit tropic movements through growth responses to external stimuli such as light, gravity, and touch.

Describe the role of auxin in phototropism.

• Auxin has no role in phototropism.

• Auxin directly absorbs light and causes the stem to bend.

• Auxin promotes cell elongation on the shaded side of the stem, causing it to bend towards the light source.

• Auxin inhibits cell elongation on the shaded side of the stem, causing it to bend away from the light source.

Why is gravitropism important for plant survival?

• Gravitropism is only important for animal survival

• Gravitropism allows plants to produce more flowers

• Gravitropism is important for plant survival because it helps plants orient themselves for optimal nutrient and light absorption.

• Gravitropism helps plants communicate with other organisms

Compare and contrast phototropism and gravitropism.

• Phototropism is growth towards light, while gravitropism is growth in response to gravity.

• Phototropism is growth away from light, while gravitropism is growth towards gravity.

• Phototropism is growth in response to touch, while gravitropism is growth towards water.

• Phototropism is growth in response to gravity, while gravitropism is growth towards light.